Looks like Namor will be a member too, although I can't imagine how the Panther would agree to be on a team with him. If anything, Namor should be tried for war crimes considering his actions in Wakanda in AvX.
They mention the(current)relationship of Namor and T'Challa in the article when discussing conflict w/in the group, I'm sure their 'differences' will be very prevalent in the story and create a lot of tension with Reed stuck in the middle.
I bet the fact that Namor was 'under the influence' of the Phoenix Force will be his excuse, even though the Phoenix Force only amplified what each character was already feeling/wanting to do. Good stuff. My expectations are high, but I loved Hickman's story in FF #607/608 (especially the relationship between Reed and T'Challa).